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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 9 Months Ended
Sep. 30, 2025
Accounting Policies [Abstract]  
Schedule of Concentration of Credit Risk
We derived transaction-based revenues from individual market makers and exchanges in excess of 10% of total revenues, as follows:
Three Months Ended
 September 30,		Nine Months Ended
September 30,
2024202520242025
Market makers and exchanges:
Citadel Securities, LLC14 %13 %13 %12 %
All others individually less than 10%36 %41 %37 %44 %
Total as percentage of total revenue50 %54 %50 %56 %